3

TABLE 1.

CA3189E FEATURES COMPARED TO CA3089E

FEATURES

CA3189E

CA3089E

Low Limiting Sensitivity (12

µV Typ)

Yes

Yes

Low Distortion

Yes

Yes

Single-Coil Tuning Capability

Yes

Yes

Programmable Audio Level

Yes

No

S/N Mute

Yes

Yes

Deviation Mute

Yes

No

Flexible AFC

Yes

Yes

Programmable AGC Threshold and Voltage

Yes

No

Typical S + N/N > 70 dB

Yes

No

Meter Drive Voltage Depressed at Very Low Signal Levels

Yes

No

On-Channel Step Control Voltage

Yes

No

Test Circuits

NOTES:

3. All resistance values are in ohms.

KACS K586HM or equivalent).

5. C = 0.01

µF for 50µs deemphasis (Europe).

C = 0.015

µF for 75µs deemphasis (USA).

FIGURE 1. TEST CIRCUIT FOR CA3189E USING A SINGLE-

TUNED DETECTOR COIL

NOTES:

6. All resistance values are in ohms.

20

8. Above values permit proper operation of mute (squelch) circuit

“E” type slugs, spacing 4mm.

9. C = 0.01

µF for 50µs deemphasis (Europe) C = 0.015µF for 75µs

deemphasis (USA).

FIGURE 2. TEST CIRCUIT FOR CA3189E USING A DOUBLE-

TUNED DETECTOR COIL

AUDIO

OUT

SIGNAL

INPUT

VOLTAGE

14

4

15

13

5

12

0.01

µF

10

K

33K

0.01

µF

C

6

FULL

SCALE

150

µA

2

3

0.01

µF

0.33

µF

10K

470

TUNING METER

0.02

µF

51

1

0.01

µF

11

0.05

µF

8

7

9

3.9K

100

C

L

8.2K

22

µH

AFC

V+ = 12V

pF

CA3189E

16

OUT

10

5K

10

µF

10

µF

TO

PIN 13

47K

22K

1

µF

(NOTE

4)

(NOTE

5)

SIGNAL

INPUT

VOLTAGE

14

4

15

13

0.01

µF

10

K

33K

0.01

µF

FULL

SCALE

150

µA

2

3

0.01

µF

TUNING METER

0.02

µF

51

1

0.01

µF

11

0.05

µF

8

9

8.2K

100

T (NOTE 7)

22

µH

V+ = 12V

pF

100

pF

3K

AUDIO

OUT

5

12

C

6

0.33

µF

10K

470

7

8.2K

AFC

OUT

10

5K

10

µF

10

µF

22K

1

µF

16

TO

PIN 13

47K

CA3189E

(NOTE 9)

CA3189